Improvement in cultivators



2 Sheets-Sheet 1.

D. EDWARD. 4GULTIVATOR.

No. 113,148. Patented Mam28, 1871.

2 sheets-sheen 2.

l D. EDWARD.

GULTIVATOR.

Patented Mam. 28, 1871.

INo. 113,148.

ata-ietf sont DAVID EDWARDSOF MARONG,

NEAR SAN DHURST, AUSTRALIA.

Letters Patent No. 113,148, dated Marchv28, 1871.

IMPROVEMENT IN CULTIMATORS.

The Schedule referred to in these Lettere Patent and making part of the same.

To all whomit may concern.-

Be it known that I, DAVID EDWARDS, of Marong, near Sandhurst, in the British colony of Victoriain Australia, blacksmith, havel invented certain Improvements in the Construction of Land-Cultivators and I do hereby declare that the following is a full and exact` description' thereof, reference bc, ing had to the accompanying drawing and to the letters of reference marked thereon. i My invention consists of certain improvements in thev construction of land-cultivators, whereby I am enabled to produce a machine which will perform the work required to be done by it in a much more effective manner than can be accomplished by any other machine of the same class, and that too at a less expense in construction and with greater economy in working. It is so designed that it may be u'serl either for plowing or scarifying, as may be desire Referring to the drawing hereto attached- Figure 1 represents a perspective view of my machine ttcd with teeth as a scariiier; -and Figure 2 shows plan of same; while lFigures 3,4, 5, 6, and 7 show detailed views of some of the parts'on a larger scale, including the plowshares, which may be substituted foi-"the scarii'ying teeth when required, as hereinafter explained,

A is the center-bar or beam, one extremity of which is connected by a clutch o'r clasp, B, fitting loosely on the vertical shaft 0, while the other extremity is connected to a cross-bar, I), which is attached to the crank-axlc E of the back-bearing Wheels F.

From this. end of' the center-beam there rise two parallel pieces of' iron, G, which form the guide for the handle of' the lever H, the position of which may be 'adjusted by means ofpiu I passing through the perforations made in the guide G.

lhs lever is connected tothe crank-axle E.

'.lo this lever I- attach a rod, J, which is connected at i-ts other extremity to another lever, K, acting upon fulcrum L, and proceedin'gto the top oi' shaft C, as shown.

M are iron bars, bent in the shape shown, to which I attach the teeth N by means oi' square clasp 0 and set-screw P.

Q aretwo pieces. of iron, having perforations,'as shown, for the receptionlv of the straight portion of the draft-link R.

S is a key, ior screwing or unscrewing the setscrews.

'.lhe drawing represents a four-horse machine, in which there aretwenty teeth, each placed in. a line about three inches outside tbc other, (with the'e'xception of the two attardiefly to thecenter-beam.)and" eacli being at aA point about ten inches behind each other.

Now, if a two-horse (or twelve-toothed) machine '.be'made, .the .teeth `will -rcquire' to f be :a .longer-dhs# 'I "nrethis 8th day of October, 1869.

tance (say twelve inches) behind each other, although only the same distance outside each other.

In order to accomplish tbis'the angles in the zigzag bar must be made longer and more obtuse than in the larger machine, so that the center-beam wili be about six feet in length, the larger onc'being about eight feet.

It will be seen at once that the length of the teeth below the zigzag bar or center-beam, (as the case may be,)'as well as the degree of angular-ity to be given to them, can be'regulated to a nicety by means of the set-screws Pand clasps O, while by the same means they may be removed' altogether and the plowshares substituted for` them.

lVh'eu the plowsharesare so substituted for the scarifying teeth I only remove every other tooth, so that there would be live plowshares only on one side and four on the otheigwhich are to beso set that they will form the ridge `inside the zigzag bar. each turning over the earth toward the opposite side of the machine. In order to accomplish this it will 'ne necessary to have those on the right-hand side the machine with a left-hand pitch, and those on the lett-hand side of the machine with .a rightfhand pitch. i y If my machine be' used for -working ground close vto any growing plant'such as vines, it will be' ad visable to substitute. sledges, as shown in lig.` 6, for the back-bearing wheels, attaching them to the short crank at each end of the axle, andv making the airle somewhat shorter, as shown iu dotted lines, fig. 2.'

By my method of construction the wholebodyiot the machine may be lifted perpendicularly (and consequently without altering the position in 'which-the teeth or plowshares may be set relatively to their work) v by ineansof lever Hyandmay be kept in any required position by means of pin I andthe breakage, which often occurs in the teeth by reason of that part of them which is held beingreduced in size, and iu the bars by reason of the perforatious usually made therein, is prevented.

Having thus described the nature of my invention and the mannerof' performing the same, I would have it understood that I do not eonue myself to the precisedetails of any of the parts of my machines so long as the nature thereof be retained; but

1. The teeth N, or plowshares, iigs.3 and 4, constructed substantially as hereinsbown and described.

2.v The zigzag lbais M, teeth-N, clasps O, centerbar'A, cross-bar D, in combination with 4 the crankaxle E, the whole arranged and operating" substantially as described.- y

The above specilication of my invention signed by DAVID EDWARDS. Witnesses:

EDWARD WATERS, Imm .Anm-nin. 

